Journal
OPTICS EXPRESS
Volume 24, Issue 16, Pages 17686-17697Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.24.017686
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Funding
- National Natural Science Foundation of P.R. China
- Priority Academic Program Development of Jiangsu Higher Education Institutions [DMETKF2012002]
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An efficient three-dimensional shape measurement system based on the combining projection of single digital speckle pattern and phase-shifting fringe patterns is proposed. At the beginning, the initial corresponding point for each pixel is obtained by a novel speckle-phase combination method. The initial information can be calculated by the single speckle pattern in a short time, while the phase information is used to ensure the results. Unlike the conventional methods, it is not necessary to obtain the unwrapped phase, therefore the number of projected patterns is reduced greatly. Accurate corresponding coordinates are then obtained according to the wrapped phase. Three cases are analyzed while adjusting the initial corresponding coordinates locally. Thus accuracy coordinates are obtained without missing or incorrect points. Experiments demonstrate that we can achieve accurate reconstruction results with reduced measurement time by the proposed method. (C) 2016 Optical Society of America.
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